Concrete material with electromagnetic wave absorption performance and preparation method thereof

A technology of absorption performance and concrete, which is applied in the field of new electromagnetic wave absorbing cement-based materials and their preparation, can solve the problems of little research on graphdiyne and its composite materials, and achieves significant innovation significance, low economic cost, and good absorption effect. Effect

Active Publication Date: 2019-09-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the research on graphyne at home and abroad is mainly concentrated in the fields of energy storage materials, piezoelectric materials and catalytic reduction materials, while there is little research on graphyne and its composite materials in the field of electromagnetic wave absorption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A new type of electromagnetic wave absorbing cement-based composite material and its properties are as follows:

[0030] Portland cement: P·I 42.5 Portland cement, produced by Onoda Cement Plant, 28-day compressive strength 50.7MPa, 28-day flexural strength 8.6MPa.

[0031] Dispersant: polyoxyethylene nonylphenyl ether (CO890), produced by Sigma-Aldrich Chemical Reagent Company of the United States, white waxy solid.

[0032] Graphdiyne nanomaterials: prepared in the school laboratory, in powder form, with a particle size of 200nm-1μm.

[0033] Mixing water: Dalian tap water.

[0034] The preparation steps are as follows:

[0035] Using polyoxyethylene nonylphenyl ether (CO890) as a dispersant, replace 20% of the mixing water with an equal amount of hot water and add it to a 1000mL beaker to dissolve the dispersant. After the dispersant is completely dissolved, weigh 80% of the mixing water is added to the dispersant solution, and after the dispersant solution is coo...

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PUM

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Abstract

The invention belongs to the field of functional materials, and provides a concrete material with an electromagnetic wave absorption property and a preparation method thereof. The concrete material isprepared from the following raw materials: 200 to 800 parts of portland cement, 15 to 20 parts of a dispersing agent, 3 to 7 parts of a graphdiyne nano-material, and 250 to 350 parts of mixing water.The preparation method comprises the following steps: firstly, adding polyoxyethylene nonyl phenyl ether serving as the dispersing agent into the mixing water for dissolving, adding the graphdiyne nano-material, and stirring uniformly; secondly, adding the mixture into the portland cement, stirring, casting the stirred pulp into a mould, vibrating, compacting, and moulding; finally, detaching themould after a test sample is subjected to standard curing. According to the concrete material with the electromagnetic wave absorption property and the preparation method thereof, the electromagneticwave loss absorption property of the conventional cement-based material can be effectively improved; the reflecting rate of incident electromagnetic wave on the surface of the cement-based compositematerial is reduced; a stealth effect of a large building on the ground on radar detection is beneficially realized; the harm of increasingly complex electromagnetic environment to human bodies can bereduced; the risk of electromagnetic information leakage can also be lowered.

Description

technical field [0001] The invention belongs to the field of functional materials, and designs a concrete material with electromagnetic wave absorbing properties, in particular to a novel electromagnetic wave absorbing cement-based material based on graphyne nanomaterials and a preparation method thereof. Background technique [0002] In recent years, with the development of modern electronics, informatization and military technology, electromagnetic waves exist in all aspects of social life as the most commonly used information carrier. Highly integrated, micro-terminal mobile electronic products have greatly improved people's living standards, but while enjoying a convenient and fast modern life, electromagnetic wave interference and pollution have gradually become serious, seriously threatening human health. The application of computers and electronic information systems is becoming more and more extensive, and the interference of electromagnetic waves on daily communicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 王宝民邓双韩瑜
Owner DALIAN UNIV OF TECH
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